Transporting and elevating apparatus



c. MASCART.

TRAN SPOBTING AND ELEVATING APPARATUS.

APPLICATION FILED AUG-4" 19H.

1,345,454; Patented July ejfz'o. 25 /6192 5 2: A 495 '/0 l5 I I n II II ll Inventor.

UNITED STATES CHARLES MASCART, 0F GBOISSY-SUB-SEINE, FRANCE.

TRANSPORTING AND ELEVATING APPARATUS.

Specification of Letters Patent.

Patented July 6, 1920.

Application filed August 4, 1917. Serial No. 184,462.

To all whom it may concern:

Be it known that 1, CHARLES MAsoAn'r, engineer, citizen of the French Republic, residence Croissy-sur-Seine, France, 9 Rue de la Procession, have invented certa n new and useful Improvements in or Relating to Transporting and Elevating Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

This invention relates to transportlng and elevating apparatus using a traveling band, and it is the object of the invention to provide means which will insure the effective carrying of the materials, whatever maybe the speed of movement or the-1ncl1nat1on at which the carrying band has to run The improvement according to this invention consists in making use of a supple endless covering band arranged to run over the topof the carrying band, and to follow this in its movement, the function of this additional band being to retain the materials which it is desired to transport, pressed against or upon the travelingband. In order to increase the friction of the materials to be transported between the carrying band and the covering band, accord ing to this invention pressing rollers may be employed whose function is to-press the one band against the other, and also supporting and guiding rollers servlng to maintain the band laterally in the desired position. These rollers are made of a suitable shape, or are placed in such a manner as to give the traveling band the desired concavity in order to enable it to transport bulky materials without running the risk that such materials may fall off the band modified pressing arrangement which is weighted.

Fig. 5 is a detail view showing a method of supporting the upper tensioning roller for the covering band.

Figs. 6 and 7 are detailed views showing different forms of construction of the pressing and supporting rollers.

Referring first to Fig. 1, the carrying band 1 passes around a driving drum 2 actuated for example by means of a motor 2 through any suitable transmission gearing; the band passes down toward the charging position, being carried aro'und a guide roller 3, a tensioning roller 4 and guide rollers 5 and 6 leading it to the drum 7 at the foot of the transporter. The tensioning roller 4. is loaded by means of weights 8 in such a manner as to maintain constant the tension applied to the carrying band.

It is, of course, obvious that the weights above referred to may bereplaced by any equivalent means.

After passing around the drum 7 at the foot, the carrying band passes around the lower drum 9 which carries the covering band 10, and this latter is applied to the surface ofthe carrying band at this point. The carrying band is thus covered over while passing up the track which it has to follow when loaded with materials, until it reaches the drumat the top of the transporter. In this part of the track the band 1 is supported at various points by rollers 11, or even by simple fixed transverse guides if there is no reason to fear the results of the friction due to such guides.

The edges of the carrying band are curved inwardly by the use of rollers 12 as shown at the right-hand side in Fig. 2, turning around an oblique axis, in such a manner as to impart to the-band a concave form which will prevent or resist any of the charge from falling over thesides of the band.

The covering band 10 is carried around a driving drum 13 and over one or more guiding rollers 14 tothe lower drum 9, from which again it is carried upward while pressing with its own weight against the upward run of the carrying band. If the weight of the covering band is not sufficient, or if, for example, it is desired to transport heavy materials, the covering band may be pressed against the carrying band by means of rollers 15, the surface of which would preferably be shaped to a suitable profile diagonal guide rollers 12 by fixed angle members 16 as represented at the left-hand side in Fig.2. In the same way the supporting rollers 11 may be replaced by simple transverse stationaryguides. In. many cases, particularly when transporting heavy or bulky materials, it will be advantageous to support the pressing rollers 15. on movable carrying frames pressed downwardly or inwardly by springs 15 15 see Figs. 2 and 3.

Fig. l shows in side elevation a modified arrangement for supporting the rollers 15,

in which they are carried on arms 17 hinged at 18 to the frame of the transporter, these being provided with adjustable weights 19 serving to press the rollers against the band.

The tension of the carrying band is regulated by adjusting the applied weights 8.

Thetension of the covering bandmay be regulated by adjustment of the drum13 by means of sliding bearings adjusted by screws as indicated in Fig. 5. .The frame of the.

apparatus is formed for this purpose with grooves or guide-ways 20 at each side through which the shaft of the drum 13 can pass. The sliding bearings 21 of this shaft are guided in their movement along theframe members and'carry screw rods 22.

' Each of these rods passesthrougha crosspiece, and is adjusted by means of a nut 23 hearing against this cross-piece, in order to enable the drum 13 to be adjusted longitudi- V nally and thus to adjust the tension on the band 10. i i 7 The transporting or elevating apparatus above described operates as follows: the materials to be transported are deposited on the carrying band 1 after it passes around 7 i V the drum 7, in-theportion of its run where it is approximately horizontal, the materials being carried at this place by the band by simple adhesion thereto. As soon the band reaches thedrum 9', the materials upon it become nipped between it and the-covering below and can therefore'sag outwardly in hand vwhich passes around this drum, the materials being accommodated at this critical point in view or the elasticity of the band 1, which is'not positivelyheld up from passing around the drum 9 in order to leave room for the materials;

' of the weight of the band 10, augmented if necessary by the pressure of the rollers 15.

The materials pass over the top of the drum 2 on the band 1, reversing theprocess which takes place on the drum 9. At the drum 2, the materials are released and leave the carrying band, falling into any receptacle or on to another transporting or elevating apparatus. 0

' In the manipulation of thematerials 'it' might happen that lumps ofgreater or lesssize might adhere to the bands and mightv become nipped between these bands and 4 their drums or rollers, thus running the risk. either of unshipping the bands from their drums or of dama in them or making holes in them. 'This diihcu ty is avoided by 'forming perforations in the drums.

Figs. 6' and 7 show by way of example two forms of construction of the drums for this purpose. 7

Fig. 6 showsatransversesection, the circumference. of which is formed of sheet metal. A hub. 27 carries arms 28 around which is lapped t'he. sheet metal surface 29. The sheet metal surface is formed with holes at 30 so that if lumps of material are carried by or fall between'the drum and the band which passes over it, they can pass away through the holes 30, thus reaching the interior of the drum and falling out from the ends of it whereit isleft freely open.

Fig. 7 shows in side elevation a drum. supposed to be formed of simple bars 31 riveted or otherwise secured'at theirends on two disks 32, in which disks holes are made as at 33 adapted to allow'of theescape of materials reaching. the interior of the'drum' by falling off the band between the bars 31 as the band passes around the drum.

In view of the steep inclination at which the elevating and transporting appliance can be arranged to work, it can be employed in con unction, with a dredging or scoop-feed, 1 5

7 gagement on the band 1 or on the materials as been supposed that the covering 12o tending to carried by this latter, often suflices to insure traveling of the band 10 and the performance of its proper functions.

of the motive power required and the advantage of continuous equal delivery.

I claim:

1. In a machine of the class described, the combination with an endless conveyer belt, of a plurality of rollers for supporting the same, rollers for turning the edges of the belt away from the supporting rollers, a covering belt, and yieldably mounted rollers force the covering belt against the conveyer belt. I

2. In a machine of the class described, the

combination with an endless conveyer belt, of a plurality of rollers for supporting the an elevator insame, means for turning the edges of the 'belt away from the rollers, a covering belt,

and independently operable yieldable rollers tending to force the covering belt against the conveyer belt.

3. In a machine of the class described, the combination with an endless conveyer belt, of: rollers for supporting the same, rollers for turning the edges of the belt away from the supporting rollers, extensive with the conveyer belt, and yieldable rollers tending to force the covering belt into engagement with the conveyer belt, I

said yieldably mounted rollers extending transversely of the covering belt and being of less length than the distance between the turning rollers.

I In testimony whereof I affix my signature in presence of two witnesses.

CHARLES MASCART. Witnesses V CHAS. P. PRESSLY, Y ALEXANDBE BERTHOLZ.

a coveringbelt co- 

